salam, i was just wonerdering whether or not a female is allowed to sit itekaaf in her house instead of the masjid or is she only permissable to sit itekaaf in the masjid?

At the time of the Prophet (saws), his noble and chaste wives would perform the worship of ‘itikaaf’ in the masjid; and if one finds a masjid which has arranged for women to perform ‘itikaaf’ in the masaajids, it is permissible for the believing women who wish to fulfill the worship of ‘itikaaf’ to do so in the masaajids.  

But in this day and age, the absolute majority of the scholars and jurists, including the great Imam Abu Hanifah, are of the opinion that it is permissible for the believing woman to perform the worship of ‘itikaaf’ in their homes.

A believing woman may isolate and dedicate oneself in a corner of a room, or even a room in the house if available to the sole remembrance and worship of Allah Subhanah for a fixed period of time.